{"id":570,"date":"2026-04-04T12:18:59","date_gmt":"2026-04-04T12:18:59","guid":{"rendered":"https:\/\/www.viz-tools.com\/vi\/uml-timing-diagram-best-practices-clear-maintainable\/"},"modified":"2026-04-04T12:18:59","modified_gmt":"2026-04-04T12:18:59","slug":"uml-timing-diagram-best-practices-clear-maintainable","status":"publish","type":"post","link":"https:\/\/www.viz-tools.com\/vi\/uml-timing-diagram-best-practices-clear-maintainable\/","title":{"rendered":"C\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t cho s\u01a1 \u0111\u1ed3 Th\u1eddi gian UML: C\u00e1ch gi\u1eef cho c\u00e1c \u0111\u1eb7c t\u1ea3 th\u1eddi gian c\u1ee7a b\u1ea1n r\u00f5 r\u00e0ng v\u00e0 d\u1ec5 b\u1ea3o tr\u00ec"},"content":{"rendered":"

Trong thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p, vi\u1ec7c hi\u1ec3u r\u00f5 h\u00e0nh vi theo th\u1eddi gian c\u1ee7a c\u00e1c th\u00e0nh ph\u1ea7n l\u00e0 quan tr\u1ecdng kh\u00f4ng k\u00e9m g\u00ec vi\u1ec7c hi\u1ec3u c\u00e1c k\u1ebft n\u1ed1i c\u1ea5u tr\u00fac c\u1ee7a ch\u00fang. Trong khi s\u01a1 \u0111\u1ed3 th\u1ee9 t\u1ef1 th\u1ec3 hi\u1ec7n th\u1ee9 t\u1ef1 c\u1ee7a c\u00e1c tin nh\u1eafn, th\u00ec s\u01a1 \u0111\u1ed3 Th\u1eddi gian UML cung c\u1ea5p c\u00e1i nh\u00ecn ch\u00ednh x\u00e1c v\u1ec1 nh\u1eefng thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i v\u00e0 t\u00edn hi\u1ec7u theo th\u1eddi gian. Vi\u1ec7c tr\u1ef1c quan h\u00f3a c\u1ee5 th\u1ec3 n\u00e0y gi\u00fap c\u00e1c k\u1ef9 s\u01b0 x\u00e1c minh c\u00e1c r\u00e0ng bu\u1ed9c th\u1eddi gian th\u1ef1c v\u00e0 \u0111\u1ea3m b\u1ea3o s\u1ef1 \u0111\u1ed3ng b\u1ed9 gi\u1eefa c\u00e1c ph\u1ea7n kh\u00e1c nhau c\u1ee7a h\u1ec7 th\u1ed1ng. Tuy nhi\u00ean, n\u1ebfu thi\u1ebfu k\u1ef7 lu\u1eadt, c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y c\u00f3 th\u1ec3 tr\u1edf n\u00ean kh\u00f3 \u0111\u1ecdc v\u00e0 kh\u00f3 b\u1ea3o tr\u00ec. H\u01b0\u1edbng d\u1eabn n\u00e0y n\u00eau chi ti\u1ebft c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t \u0111\u1ec3 t\u1ea1o ra c\u00e1c \u0111\u1eb7c t\u1ea3 th\u1eddi gian r\u00f5 r\u00e0ng v\u00e0 v\u1eefng ch\u1eafc.<\/p>\n

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\"Chibi-style<\/figure>\n<\/div>\n

Hi\u1ec3u r\u00f5 c\u00e1c th\u00e0nh ph\u1ea7n c\u1ed1t l\u00f5i c\u1ee7a s\u01a1 \u0111\u1ed3 Th\u1eddi gian \u23f3<\/h2>\n

Tr\u01b0\u1edbc khi thi\u1ebft l\u1eadp c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i hi\u1ec3u r\u00f5 c\u00e1c kh\u1ed1i x\u00e2y d\u1ef1ng c\u01a1 b\u1ea3n. S\u01a1 \u0111\u1ed3 th\u1eddi gian t\u1eadp trung v\u00e0o th\u1eddi gian nh\u01b0 tr\u1ee5c ch\u00ednh. N\u00f3 th\u01b0\u1eddng hi\u1ec3n th\u1ecb th\u00f4ng tin d\u1ecdc theo m\u1ed9t tr\u1ee5c th\u1eddi gian ngang.<\/p>\n

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  • \u0110\u01b0\u1eddng s\u1ed1ng:<\/strong>C\u00e1c \u0111\u01b0\u1eddng th\u1eb3ng \u0111\u1ee9ng \u0111\u1ea1i di\u1ec7n cho c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng, b\u1ed9 ph\u1eadn ho\u1eb7c th\u1ec3 hi\u1ec7n. Ch\u00fang theo d\u00f5i tr\u1ea1ng th\u00e1i c\u1ee7a ph\u1ea7n t\u1eed theo tr\u1ee5c th\u1eddi gian.<\/li>\n
  • Thanh th\u1eddi gian:<\/strong>C\u00e1c \u0111o\u1ea1n ngang d\u1ecdc theo \u0111\u01b0\u1eddng s\u1ed1ng cho th\u1ea5y th\u1eddi gian m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng ho\u1ea1t \u0111\u1ed9ng ho\u1eb7c \u1edf tr\u1ea1ng th\u00e1i c\u1ee5 th\u1ec3.<\/li>\n
  • T\u00edn hi\u1ec7u:<\/strong>C\u00e1c m\u0169i t\u00ean ho\u1eb7c \u0111\u01b0\u1eddng th\u1eb3ng \u0111\u1ee9ng th\u1ec3 hi\u1ec7n vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u ho\u1eb7c s\u1ef1 ki\u1ec7n gi\u1eefa c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng.<\/li>\n
  • \u0110i\u1ec1u ki\u1ec7n b\u1ea5t bi\u1ebfn tr\u1ea1ng th\u00e1i:<\/strong>C\u00e1c \u0111i\u1ec1u ki\u1ec7n ph\u1ea3i \u0111\u00fang trong m\u1ed9t kho\u1ea3ng th\u1eddi gian c\u1ee5 th\u1ec3 tr\u00ean \u0111\u01b0\u1eddng s\u1ed1ng.<\/li>\n
  • \u0110i\u1ec3m t\u1eadp trung ki\u1ec3m so\u00e1t:<\/strong>Ch\u1ec9 ra khi m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng \u0111ang th\u1ef1c hi\u1ec7n m\u1ed9t thao t\u00e1c m\u1ed9t c\u00e1ch t\u00edch c\u1ef1c.<\/li>\n<\/ul>\n

    B\u1eb1ng c\u00e1ch gi\u1eef cho c\u00e1c th\u00e0nh ph\u1ea7n n\u00e0y ph\u00e2n bi\u1ec7t r\u00f5 r\u00e0ng v\u00e0 \u0111\u01b0\u1ee3c g\u00e1n nh\u00e3n ch\u00ednh x\u00e1c, s\u01a1 \u0111\u1ed3 v\u1eabn gi\u1eef \u0111\u01b0\u1ee3c t\u00ednh d\u1ec5 \u0111\u1ecdc. Vi\u1ec7c nh\u1ea7m l\u1eabn t\u00edn hi\u1ec7u v\u1edbi thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn hi\u1ec3u l\u1ea7m nghi\u00eam tr\u1ecdng trong giai \u0111o\u1ea1n tri\u1ec3n khai.<\/p>\n

    C\u1ea5u tr\u00fac nh\u1eb1m m\u1ee5c \u0111\u00edch r\u00f5 r\u00e0ng v\u00e0 d\u1ec5 \u0111\u1ecdc \ud83d\udcdd<\/h2>\n

    T\u00ednh r\u00f5 r\u00e0ng l\u00e0 m\u1ee5c ti\u00eau ch\u00ednh c\u1ee7a b\u1ea5t k\u1ef3 t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt n\u00e0o. Khi nhi\u1ec1u h\u1ec7 th\u1ed1ng t\u01b0\u01a1ng t\u00e1c v\u1edbi nhau, s\u01a1 \u0111\u1ed3 c\u00f3 th\u1ec3 tr\u1edf n\u00ean l\u1ed9n x\u1ed9n nhanh ch\u00f3ng. C\u00e1c chi\u1ebfn l\u01b0\u1ee3c sau \u0111\u00e2y gi\u00fap qu\u1ea3n l\u00fd \u0111\u1ed9 ph\u1ee9c t\u1ea1p.<\/p>\n

    1. Gi\u1edbi h\u1ea1n s\u1ed1 \u0111\u01b0\u1eddng s\u1ed1ng tr\u00ean m\u1ed7i s\u01a1 \u0111\u1ed3 \ud83e\uddf1<\/h3>\n

    \u0110\u1eebng c\u1ed1 g\u1eafng hi\u1ec3n th\u1ecb m\u1ecdi t\u01b0\u01a1ng t\u00e1c ri\u00eang l\u1ebb trong m\u1ed9t g\u00f3c nh\u00ecn duy nh\u1ea5t. N\u1ebfu s\u01a1 \u0111\u1ed3 ch\u1ee9a qu\u00e1 nhi\u1ec1u \u0111\u01b0\u1eddng s\u1ed1ng, c\u00e1c m\u1ed1i quan h\u1ec7 s\u1ebd tr\u1edf n\u00ean m\u1edd nh\u1ea1t. Chia s\u01a1 \u0111\u1ed3 th\u00e0nh c\u00e1c nh\u00f3m h\u1ee3p l\u00fd d\u1ef1a tr\u00ean c\u00e1c h\u1ec7 th\u1ed1ng con ho\u1eb7c c\u00e1c khu v\u1ef1c ch\u1ee9c n\u0103ng.<\/p>\n

      \n
    • Nh\u00f3m theo ch\u1ee9c n\u0103ng:<\/strong>Gi\u1eef c\u1ea3m bi\u1ebfn l\u1ea1i v\u1edbi nhau, b\u1ed9 \u0111i\u1ec1u khi\u1ec3n l\u1ea1i v\u1edbi nhau, v\u00e0 b\u1ed9 ch\u1ea5p h\u00e0nh l\u1ea1i v\u1edbi nhau.<\/li>\n
    • T\u1eadp trung v\u00e0o ph\u1ea1m vi:<\/strong>M\u1ed9t s\u01a1 \u0111\u1ed3 ch\u1ec9 n\u00ean bao qu\u00e1t m\u1ed9t chu\u1ed7i ho\u1eb7c lo\u1ea1i s\u1ef1 ki\u1ec7n c\u1ee5 th\u1ec3, ch\u1ee9 kh\u00f4ng ph\u1ea3i to\u00e0n b\u1ed9 v\u00f2ng \u0111\u1eddi c\u1ee7a h\u1ec7 th\u1ed1ng.<\/li>\n
    • S\u1eed d\u1ee5ng tham chi\u1ebfu:<\/strong>Tham chi\u1ebfu \u0111\u1ebfn c\u00e1c s\u01a1 \u0111\u1ed3 kh\u00e1c \u0111\u1ec3 l\u1ea5y chi ti\u1ebft thay v\u00ec nh\u00fang t\u1ea5t c\u1ea3 ch\u00fang c\u00f9ng m\u1ed9t l\u00fac.<\/li>\n<\/ul>\n

      2. \u0110\u1ed3ng b\u1ed9 c\u00e1c thang th\u1eddi gian c\u1ea9n th\u1eadn \ud83d\udccf<\/h3>\n

      T\u00ednh nh\u1ea5t qu\u00e1n trong c\u00e1c \u0111\u01a1n v\u1ecb th\u1eddi gian l\u00e0 r\u1ea5t quan tr\u1ecdng. Vi\u1ec7c tr\u1ed9n l\u1eabn mili gi\u00e2y, gi\u00e2y v\u00e0 chu k\u1ef3 m\u00e0 kh\u00f4ng c\u00f3 nh\u00e3n r\u00f5 r\u00e0ng s\u1ebd g\u00e2y nh\u1ea7m l\u1eabn. H\u00e3y ch\u1ecdn m\u1ed9t \u0111\u01a1n v\u1ecb ch\u00ednh cho s\u01a1 \u0111\u1ed3 v\u00e0 tu\u00e2n th\u1ee7 n\u00f3.<\/p>\n

        \n
      • Tuy\u1ebfn t\u00ednh so v\u1edbi T\u1ef7 l\u1ec7 logarit:<\/strong>H\u1ea7u h\u1ebft c\u00e1c s\u01a1 \u0111\u1ed3 th\u1eddi gian s\u1eed d\u1ee5ng thang tuy\u1ebfn t\u00ednh. \u0110\u1ea3m b\u1ea3o kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c d\u1ea5u th\u1eddi gian l\u00e0 \u0111\u1ec1u nhau.<\/li>\n
      • \u0110\u01a1n v\u1ecb r\u00f5 r\u00e0ng:<\/strong>Lu\u00f4n \u0111\u00e1nh d\u1ea5u tr\u1ee5c th\u1eddi gian (v\u00ed d\u1ee5: ms, s, v\u1ea1ch).<\/li>\n
      • C\u0103n ch\u1ec9nh:<\/strong>\u0110\u1ea3m b\u1ea3o c\u00e1c t\u00edn hi\u1ec7u \u0111\u01b0\u1ee3c g\u1eedi t\u1eeb m\u1ed9t \u0111\u01b0\u1eddng s\u1ed1ng s\u1ebd c\u0103n ch\u1ec9nh ch\u00ednh x\u00e1c v\u1edbi thanh th\u1eddi gian c\u1ee7a \u0111\u01b0\u1eddng s\u1ed1ng nh\u1eadn.<\/li>\n<\/ul>\n

        3. Chu\u1ea9n h\u00f3a quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean \ud83c\udff7\ufe0f<\/h3>\n

        T\u00ean ph\u1ea3i t\u1ef1 gi\u1ea3i th\u00edch \u0111\u01b0\u1ee3c. Tr\u00e1nh d\u00f9ng c\u00e1c vi\u1ebft t\u1eaft kh\u00f4ng chu\u1ea9n tr\u00ean to\u00e0n \u0111\u1ed9i. S\u1eed d\u1ee5ng c\u00f9ng m\u1ed9t quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean cho c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng trong s\u01a1 \u0111\u1ed3 th\u1eddi gian nh\u01b0 \u0111\u00e3 d\u00f9ng trong s\u01a1 \u0111\u1ed3 l\u1edbp.<\/p>\n\n\n\n\n\n
        Tr\u00e1nh<\/strong><\/th>\nS\u1eed d\u1ee5ng thay v\u00e0o \u0111\u00f3<\/strong><\/th>\nL\u00fd do<\/strong><\/th>\n<\/tr>\n
        obj1<\/code><\/td>\nB\u1ed9 \u0111i\u1ec1u khi\u1ec3n c\u1ea3m bi\u1ebfn<\/code><\/td>\nT\u00ean m\u00f4 t\u1ea3 gi\u00fap d\u1ec5 hi\u1ec3u m\u00e0 kh\u00f4ng c\u1ea7n ng\u1eef c\u1ea3nh.<\/td>\n<\/tr>\n
        msg_A<\/code><\/td>\nT\u00edn hi\u1ec7u B\u1eaft \u0111\u1ea7u<\/code><\/td>\nT\u00ean h\u01b0\u1edbng h\u00e0nh \u0111\u1ed9ng l\u00e0m r\u00f5 m\u1ee5c \u0111\u00edch.<\/td>\n<\/tr>\n
        tr\u1ea1ng th\u00e1i 1<\/code><\/td>\n\u0110ang ch\u1edd<\/code><\/td>\nT\u00ean tr\u1ea1ng th\u00e1i ph\u1ea3i ph\u1ea3n \u00e1nh h\u00e0nh vi th\u1ef1c t\u1ebf c\u1ee7a h\u1ec7 th\u1ed1ng.<\/td>\n<\/tr>\n<\/table>\n

        Qu\u1ea3n l\u00fd tr\u1ea1ng th\u00e1i v\u00e0 ho\u1ea1t \u0111\u1ed9ng theo th\u1eddi gian \u2699\ufe0f<\/h2>\n

        T\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c tr\u1ea1ng th\u00e1i v\u00e0 ho\u1ea1t \u0111\u1ed9ng l\u00e0 n\u01a1i s\u01a1 \u0111\u1ed3 th\u1eddi gian th\u01b0\u1eddng tr\u1edf n\u00ean m\u01a1 h\u1ed3. Vi\u1ec7c bi\u1ec3u di\u1ec5n r\u00f5 r\u00e0ng c\u00e1c t\u01b0\u01a1ng t\u00e1c n\u00e0y gi\u00fap ng\u0103n ng\u1eeba l\u1ed7i tri\u1ec3n khai.<\/p>\n

        1. S\u1eed d\u1ee5ng b\u1ea5t bi\u1ebfn tr\u1ea1ng th\u00e1i \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c \ud83d\udd12<\/h3>\n

        Khi m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng ph\u1ea3i duy tr\u00ec \u1edf m\u1ed9t tr\u1ea1ng th\u00e1i c\u1ee5 th\u1ec3 trong m\u1ed9t kho\u1ea3ng th\u1eddi gian x\u00e1c \u0111\u1ecbnh, h\u00e3y s\u1eed d\u1ee5ng b\u1ea5t bi\u1ebfn tr\u1ea1ng th\u00e1i. \u0110i\u1ec1u n\u00e0y l\u00e0m r\u00f5 r\u1eb1ng \u0111i\u1ec1u ki\u1ec7n kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t kho\u1ea3nh kh\u1eafc nh\u1ea5t th\u1eddi m\u00e0 l\u00e0 m\u1ed9t y\u00eau c\u1ea7u k\u00e9o d\u00e0i.<\/p>\n

          \n
        • Th\u1eddi l\u01b0\u1ee3ng:<\/strong>R\u00f5 r\u00e0ng \u0111\u00e1nh d\u1ea5u th\u1eddi \u0111i\u1ec3m b\u1eaft \u0111\u1ea7u v\u00e0 k\u1ebft th\u00fac c\u1ee7a tr\u1ea1ng th\u00e1i.<\/li>\n
        • \u0110i\u1ec1u ki\u1ec7n:<\/strong>X\u00e1c \u0111\u1ecbnh b\u1ea5t k\u1ef3 \u0111i\u1ec1u ki\u1ec7n n\u00e0o ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u00e1p \u1ee9ng trong kho\u1ea3ng th\u1eddi gian n\u00e0y.<\/li>\n
        • Tr\u01b0\u1eddng h\u1ee3p ngo\u1ea1i l\u1ec7:<\/strong>Ghi ch\u00fa n\u1ebfu tr\u1ea1ng th\u00e1i c\u00f3 th\u1ec3 b\u1ecb ng\u1eaft qu\u00e3ng b\u1edfi c\u00e1c s\u1ef1 ki\u1ec7n b\u00ean ngo\u00e0i.<\/li>\n<\/ul>\n

          2. Ph\u00e2n bi\u1ec7t gi\u1eefa g\u1eedi v\u00e0 nh\u1eadn \ud83d\udce5\ud83d\udce4<\/h3>\n

          C\u00e1c t\u00edn hi\u1ec7u di chuy\u1ec3n theo th\u1eddi gian. R\u1ea5t quan tr\u1ecdng l\u00e0 ph\u00e2n bi\u1ec7t th\u1eddi \u0111i\u1ec3m t\u00edn hi\u1ec7u \u0111\u01b0\u1ee3c g\u1eedi v\u00e0 th\u1eddi \u0111i\u1ec3m t\u00edn hi\u1ec7u \u0111\u01b0\u1ee3c nh\u1eadn. S\u1ef1 ki\u1ec7n g\u1eedi x\u1ea3y ra t\u1ea1i \u0111\u1ea7u m\u0169i t\u00ean. S\u1ef1 ki\u1ec7n nh\u1eadn x\u1ea3y ra t\u1ea1i v\u1ecb tr\u00ed m\u0169i t\u00ean giao v\u1edbi \u0111\u01b0\u1eddng s\u1ed1ng \u0111\u00edch.<\/p>\n

            \n
          • B\u1ea5t \u0111\u1ed3ng b\u1ed9:<\/strong> S\u1eed d\u1ee5ng \u0111\u1ea7u m\u0169i t\u00ean m\u1edf cho c\u00e1c t\u00edn hi\u1ec7u kh\u00f4ng ch\u1edd ph\u1ea3n h\u1ed3i ngay l\u1eadp t\u1ee9c.<\/li>\n
          • \u0110\u1ed3ng b\u1ed9:<\/strong>S\u1eed d\u1ee5ng \u0111\u1ea7u m\u0169i t\u00ean \u0111\u1eadm cho c\u00e1c l\u1eddi g\u1ecdi ch\u1eb7n ng\u01b0\u1eddi g\u1ecdi cho \u0111\u1ebfn khi ng\u01b0\u1eddi nh\u1eadn ho\u00e0n th\u00e0nh.<\/li>\n
          • \u0110\u1ed9 tr\u1ec5:<\/strong>Hi\u1ec3n th\u1ecb r\u00f5 r\u00e0ng b\u1ea5t k\u1ef3 \u0111\u1ed9 tr\u1ec5 x\u1eed l\u00fd n\u00e0o gi\u1eefa g\u1eedi v\u00e0 nh\u1eadn n\u1ebfu \u0111i\u1ec1u \u0111\u00f3 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi logic h\u1ec7 th\u1ed1ng.<\/li>\n<\/ul>\n

            3. X\u1eed l\u00fd \u0111\u1ed3ng th\u1eddi c\u1ea9n tr\u1ecdng \u26a1<\/h3>\n

            Khi nhi\u1ec1u qu\u00e1 tr\u00ecnh ch\u1ea1y \u0111\u1ed3ng th\u1eddi, c\u00e1c \u0111\u01b0\u1eddng \u0111\u1eddi c\u1ee7a ch\u00fang ph\u1ea3i song song v\u1edbi d\u00f2ng th\u1eddi gian ch\u00ednh. \u0110\u1ea3m b\u1ea3o c\u00e1c \u0111\u01b0\u1eddng \u0111\u1eddi \u0111\u1ed3ng th\u1eddi \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1ch r\u00f5 r\u00e0ng v\u00e0 \u0111\u01b0\u1ee3c \u0111\u00e1nh d\u1ea5u l\u00e0 c\u00e1c \u0111o\u1ea1n song song n\u1ebfu c\u1ea7n thi\u1ebft.<\/p>\n

              \n
            • C\u00e1c v\u00f9ng song song:<\/strong>S\u1eed d\u1ee5ng c\u00e1c thanh song song \u0111\u1ec3 ch\u1ec9 ra nhi\u1ec1u lu\u1ed3ng ho\u1eb7c qu\u00e1 tr\u00ecnh \u0111ang ch\u1ea1y \u0111\u1ed3ng th\u1eddi.<\/li>\n
            • T\u00e0i nguy\u00ean chia s\u1ebb:<\/strong>N\u1ebfu c\u00e1c \u0111\u01b0\u1eddng \u0111\u1eddi chia s\u1ebb m\u1ed9t t\u00e0i nguy\u00ean, h\u00e3y ch\u1ec9 ra c\u00e1c kho\u1ea3ng th\u1eddi gian c\u00f3 th\u1ec3 x\u1ea3y ra xung \u0111\u1ed9t ho\u1eb7c kh\u00f3a t\u00e0i nguy\u00ean.<\/li>\n
            • S\u1ef1 can thi\u1ec7p:<\/strong>Hi\u1ec3n th\u1ecb n\u1ebfu m\u1ed9t qu\u00e1 tr\u00ecnh ch\u1eb7n qu\u00e1 tr\u00ecnh kh\u00e1c trong m\u1ed9t kho\u1ea3ng th\u1eddi gian c\u1ee5 th\u1ec3.<\/li>\n<\/ul>\n

              Kh\u1ea3 n\u0103ng b\u1ea3o tr\u00ec v\u00e0 ki\u1ec3m so\u00e1t phi\u00ean b\u1ea3n \ud83d\udd04<\/h2>\n

              C\u00e1c y\u00eau c\u1ea7u thay \u0111\u1ed5i. Khi h\u1ec7 th\u1ed1ng ph\u00e1t tri\u1ec3n, c\u00e1c s\u01a1 \u0111\u1ed3 th\u1eddi gian ph\u1ea3i thay \u0111\u1ed5i theo. M\u1ed9t s\u01a1 \u0111\u1ed3 d\u1ec5 b\u1ea3o tr\u00ec s\u1ebd gi\u1ea3m chi ph\u00ed c\u1eadp nh\u1eadt.<\/p>\n

              1. Chia nh\u1ecf c\u00e1c t\u01b0\u01a1ng t\u00e1c ph\u1ee9c t\u1ea1p \ud83d\udd17<\/h3>\n

              Kh\u00f4ng t\u1ea1o m\u1ed9t s\u01a1 \u0111\u1ed3 kh\u1ed5ng l\u1ed3 duy nh\u1ea5t cho m\u1ed9t h\u1ec7 th\u1ed1ng con ph\u1ee9c t\u1ea1p. Chia h\u00e0nh vi th\u00e0nh c\u00e1c t\u00ecnh hu\u1ed1ng nh\u1ecf h\u01a1n, h\u1ee3p l\u00fd h\u01a1n.<\/p>\n

                \n
              • D\u1ef1a tr\u00ean t\u00ecnh hu\u1ed1ng:<\/strong>T\u1ea1o c\u00e1c s\u01a1 \u0111\u1ed3 ri\u00eang bi\u1ec7t cho \u201cCh\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng\u201d, \u201cX\u1eed l\u00fd l\u1ed7i\u201d v\u00e0 \u201cKh\u1edfi t\u1ea1o\u201d.<\/li>\n
              • Kh\u1ea3 n\u0103ng t\u00e1i s\u1eed d\u1ee5ng:<\/strong>N\u1ebfu m\u1ed9t m\u1eabu th\u1eddi gian l\u1eb7p l\u1ea1i, h\u00e3y ghi ch\u00e9p m\u1ed9t l\u1ea7n v\u00e0 tham chi\u1ebfu \u0111\u1ebfn n\u00f3.<\/li>\n
              • Li\u00ean k\u1ebft:<\/strong>S\u1eed d\u1ee5ng li\u00ean k\u1ebft si\u00eau v\u0103n b\u1ea3n ho\u1eb7c tham chi\u1ebfu gi\u1eefa c\u00e1c s\u01a1 \u0111\u1ed3 \u0111\u1ec3 th\u1ec3 hi\u1ec7n m\u1ed1i quan h\u1ec7 m\u00e0 kh\u00f4ng c\u1ea7n sao ch\u00e9p l\u1eb7p l\u1ea1i.<\/li>\n<\/ul>\n

                2. Ghi ch\u00fa c\u00e1c gi\u1ea3 \u0111\u1ecbnh v\u00e0 gi\u1edbi h\u1ea1n \ud83d\udccc<\/h3>\n

                C\u00e1c s\u01a1 \u0111\u1ed3 th\u1eddi gian th\u01b0\u1eddng ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c gi\u1ea3 \u0111\u1ecbnh n\u1ec1n t\u1ea3ng v\u1ec1 \u0111\u1ed9 tr\u1ec5 ph\u1ea7n c\u1ee9ng ho\u1eb7c m\u1ea1ng. Ghi ch\u00fa c\u00e1c gi\u1ea3 \u0111\u1ecbnh n\u00e0y b\u00ean ngo\u00e0i s\u01a1 \u0111\u1ed3 h\u00ecnh \u1ea3nh \u0111\u1ec3 gi\u1eef cho s\u01a1 \u0111\u1ed3 \u0111\u01b0\u1ee3c g\u1ecdn g\u00e0ng.<\/p>\n

                  \n
                • \u0110\u1ed9 tr\u1ec5:<\/strong>Ghi ch\u00fa \u0111\u1ed9 tr\u1ec5 m\u1ea1ng mong \u0111\u1ee3i trong ch\u00fa th\u00edch s\u01a1 \u0111\u1ed3.<\/li>\n
                • Gi\u1edbi h\u1ea1n ph\u1ea7n c\u1ee9ng:<\/strong>X\u00e1c \u0111\u1ecbnh t\u1ed1c \u0111\u1ed9 b\u1ed9 x\u1eed l\u00fd ho\u1eb7c chu k\u1ef3 \u0111\u1ed3ng h\u1ed3 n\u1ebfu c\u00f3 li\u00ean quan \u0111\u1ebfn th\u1eddi gian.<\/li>\n
                • M\u00f4i tr\u01b0\u1eddng:<\/strong> N\u00eau c\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn th\u1eddi gian (v\u00ed d\u1ee5: nhi\u1ec7t \u0111\u1ed9, t\u1ea3i).<\/li>\n<\/ul>\n

                  3. \u0110\u00e1nh gi\u00e1 v\u00e0 c\u1eadp nh\u1eadt \u0111\u1ecbnh k\u1ef3 \ud83d\uddd3\ufe0f<\/h3>\n

                  L\u00ean l\u1ecbch \u0111\u00e1nh gi\u00e1 \u0111\u1ecbnh k\u1ef3 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e1c s\u01a1 \u0111\u1ed3 ph\u00f9 h\u1ee3p v\u1edbi m\u00e3 ngu\u1ed3n hi\u1ec7n t\u1ea1i. C\u00e1c s\u01a1 \u0111\u1ed3 l\u1ed7i th\u1eddi nguy hi\u1ec3m h\u01a1n c\u1ea3 vi\u1ec7c kh\u00f4ng c\u00f3 s\u01a1 \u0111\u1ed3 n\u00e0o.<\/p>\n

                    \n
                  • Xem x\u00e9t m\u00e3 ngu\u1ed3n:<\/strong>So s\u00e1nh h\u00e0nh vi s\u01a1 \u0111\u1ed3 v\u1edbi tri\u1ec3n khai m\u1edbi nh\u1ea5t.<\/li>\n
                  • Ph\u1ea3n h\u1ed3i t\u1eeb c\u00e1c b\u00ean li\u00ean quan:<\/strong>Y\u00eau c\u1ea7u c\u00e1c ki\u1ebfn tr\u00fac s\u01b0 h\u1ec7 th\u1ed1ng x\u00e1c minh logic th\u1eddi gian.<\/li>\n
                  • S\u1ed5 ghi ch\u00e9p thay \u0111\u1ed5i:<\/strong>Duy tr\u00ec s\u1ed5 ghi ch\u00e9p v\u1ec1 th\u1eddi \u0111i\u1ec3m v\u00e0 l\u00fd do c\u00e1c r\u00e0ng bu\u1ed9c th\u1eddi gian c\u1ee5 th\u1ec3 \u0111\u00e3 \u0111\u01b0\u1ee3c thay \u0111\u1ed5i.<\/li>\n<\/ul>\n

                    Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn c\u1ea7n tr\u00e1nh \u26a0\ufe0f<\/h2>\n

                    Ngay c\u1ea3 c\u00e1c k\u1ef9 s\u01b0 c\u00f3 kinh nghi\u1ec7m c\u0169ng c\u00f3 th\u1ec3 m\u1eafc sai l\u1ea7m. Nh\u1eadn di\u1ec7n c\u00e1c l\u1ed7i ph\u1ed5 bi\u1ebfn s\u1ebd gi\u00fap ng\u0103n ng\u1eeba ch\u00fang.<\/p>\n

                      \n
                    • \u0110\u01a1n v\u1ecb th\u1eddi gian m\u01a1 h\u1ed3:<\/strong>Kh\u00f4ng x\u00e1c \u0111\u1ecbnh r\u00f5 th\u1eddi gian l\u00e0 t\u01b0\u01a1ng \u0111\u1ed1i hay tuy\u1ec7t \u0111\u1ed1i.<\/strong>Lu\u00f4n x\u00e1c \u0111\u1ecbnh \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u (v\u00ed d\u1ee5: B\u1eaft \u0111\u1ea7u h\u1ec7 th\u1ed1ng, B\u1eadt ngu\u1ed3n).<\/li>\n
                    • C\u00e1c \u0111\u01b0\u1eddng \u0111\u1eddi ch\u1ed3ng l\u1ea5n:<\/strong>V\u1ebd c\u00e1c \u0111\u01b0\u1eddng \u0111\u1eddi qu\u00e1 g\u1ea7n nhau khi\u1ebfn vi\u1ec7c ph\u00e2n bi\u1ec7t c\u00e1c t\u00edn hi\u1ec7u tr\u1edf n\u00ean kh\u00f3 kh\u0103n.<\/strong>\u0110\u1ea3m b\u1ea3o kho\u1ea3ng c\u00e1ch h\u1ee3p l\u00fd.<\/li>\n
                    • B\u1ecf qua \u0111\u1ed9 dao \u0111\u1ed9ng:<\/strong>Gi\u1ea3 \u0111\u1ecbnh th\u1eddi gian ho\u00e0n h\u1ea3o trong c\u00e1c h\u1ec7 th\u1ed1ng th\u1eddi gian th\u1ef1c.<\/strong>Ch\u1ec9 r\u00f5 c\u00e1c kho\u1ea3ng gi\u00e1 tr\u1ecb ho\u1eb7c \u0111\u1ed9 dung sai n\u01a1i \u0111\u1ed9 dao \u0111\u1ed9ng c\u00f3 th\u1ec3 x\u1ea3y ra.<\/li>\n
                    • Thi\u1ebfu h\u1ea1n ch\u00f3t:<\/strong>Kh\u00f4ng ghi ch\u00fa h\u1ea1n ch\u00f3t c\u1ee9ng cho c\u00e1c thao t\u00e1c quan tr\u1ecdng.<\/strong>S\u1eed d\u1ee5ng c\u00e1c d\u1ea5u hi\u1ec7u th\u1eb3ng \u0111\u1ee9ng \u0111\u1ec3 \u0111\u00e1nh d\u1ea5u h\u1ea1n ch\u00f3t.<\/li>\n<\/ul>\n

                      T\u00edch h\u1ee3p v\u1edbi c\u00e1c s\u01a1 \u0111\u1ed3 UML kh\u00e1c \ud83d\udd17<\/h2>\n

                      S\u01a1 \u0111\u1ed3 th\u1eddi gian kh\u00f4ng t\u1ed3n t\u1ea1i m\u1ed9t c\u00e1ch c\u00f4 l\u1eadp. N\u00f3 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t nh\u1ea5t khi \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p v\u1edbi c\u00e1c t\u00e0i li\u1ec7u m\u00f4 h\u00ecnh h\u00f3a kh\u00e1c.<\/p>\n

                      1. M\u1ed1i quan h\u1ec7 v\u1edbi s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 \ud83d\udcdc<\/h3>\n

                      S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 th\u1ec3 hi\u1ec7n th\u1ee9 t\u1ef1 logic c\u1ee7a c\u00e1c tin nh\u1eafn. S\u01a1 \u0111\u1ed3 th\u1eddi gian th\u1ec3 hi\u1ec7n c\u00e1c r\u00e0ng bu\u1ed9c v\u1ec1 th\u1eddi gian. S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 cho lu\u1ed3ng c\u1ea5p cao v\u00e0 s\u01a1 \u0111\u1ed3 th\u1eddi gian cho vi\u1ec7c x\u00e1c minh chi ti\u1ebft.<\/p>\n

                        \n
                      • T\u00ednh nh\u1ea5t qu\u00e1n:<\/strong>\u0110\u1ea3m b\u1ea3o th\u1ee9 t\u1ef1 tin nh\u1eafn trong s\u01a1 \u0111\u1ed3 th\u1eddi gian ph\u00f9 h\u1ee3p v\u1edbi s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1.<\/li>\n
                      • M\u1ee9c \u0111\u1ed9 chi ti\u1ebft:<\/strong> S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 th\u1eddi gian \u0111\u1ec3 th\u00eam c\u00e1c r\u00e0ng bu\u1ed9c th\u1eddi gian cho c\u00e1c t\u01b0\u01a1ng t\u00e1c \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh trong s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1.<\/li>\n<\/ul>\n

                        2. M\u1ed1i quan h\u1ec7 v\u1edbi s\u01a1 \u0111\u1ed3 m\u00e1y tr\u1ea1ng th\u00e1i \ud83d\udd04<\/h3>\n

                        C\u00e1c m\u00e1y tr\u1ea1ng th\u00e1i x\u00e1c \u0111\u1ecbnh logic b\u00ean trong. S\u01a1 \u0111\u1ed3 th\u1eddi gian x\u00e1c \u0111\u1ecbnh c\u00e1c r\u00e0ng bu\u1ed9c th\u1eddi gian b\u00ean ngo\u00e0i \u0111\u1ed1i v\u1edbi logic \u0111\u00f3.<\/p>\n

                          \n
                        • Th\u1eddi l\u01b0\u1ee3ng tr\u1ea1ng th\u00e1i:<\/strong>X\u00e1c minh th\u1eddi gian d\u00e0nh cho m\u1ed9t tr\u1ea1ng th\u00e1i c\u00f3 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c chuy\u1ec3n ti\u1ebfp c\u1ee7a m\u00e1y tr\u1ea1ng th\u00e1i hay kh\u00f4ng.<\/li>\n
                        • V\u00e0o\/Ra:<\/strong>\u0110\u1ea3m b\u1ea3o th\u1eddi gian x\u1ea3y ra c\u00e1c s\u1ef1 ki\u1ec7n v\u00e0o v\u00e0 ra ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c chuy\u1ec3n ti\u1ebfp tr\u1ea1ng th\u00e1i.<\/li>\n<\/ul>\n

                          Danh s\u00e1ch ki\u1ec3m tra cho c\u00e1c t\u00e0i li\u1ec7u r\u00f5 r\u00e0ng \u2705<\/h2>\n

                          S\u1eed d\u1ee5ng danh s\u00e1ch ki\u1ec3m tra n\u00e0y tr\u01b0\u1edbc khi ho\u00e0n t\u1ea5t b\u1ea5t k\u1ef3 s\u01a1 \u0111\u1ed3 th\u1eddi gian n\u00e0o.<\/p>\n\n\n\n\n\n\n\n\n\n
                          Ki\u1ec3m tra<\/strong><\/th>\nTr\u1ea1ng th\u00e1i<\/strong><\/th>\nGhi ch\u00fa<\/strong><\/th>\n<\/tr>\n
                          T\u1ea5t c\u1ea3 c\u00e1c \u0111\u01b0\u1eddng \u0111\u1eddi c\u00f3 \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean r\u00f5 r\u00e0ng kh\u00f4ng?<\/td>\n\u2610<\/td>\n<\/td>\n<\/tr>\n
                          C\u00e1c \u0111\u01a1n v\u1ecb th\u1eddi gian c\u00f3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh v\u00e0 nh\u1ea5t qu\u00e1n kh\u00f4ng?<\/td>\n\u2610<\/td>\n<\/td>\n<\/tr>\n
                          C\u00e1c t\u00edn hi\u1ec7u c\u00f3 th\u1ec3 ph\u00e2n bi\u1ec7t \u0111\u01b0\u1ee3c v\u1edbi c\u00e1c thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i kh\u00f4ng?<\/td>\n\u2610<\/td>\n<\/td>\n<\/tr>\n
                          C\u00e1c qu\u00e1 tr\u00ecnh \u0111\u1ed3ng th\u1eddi c\u00f3 \u0111\u01b0\u1ee3c \u0111\u00e1nh nh\u00e3n kh\u00f4ng?<\/td>\n\u2610<\/td>\n<\/td>\n<\/tr>\n
                          C\u00e1c m\u1ed1c th\u1eddi gian quan tr\u1ecdng c\u00f3 \u0111\u01b0\u1ee3c \u0111\u00e1nh d\u1ea5u kh\u00f4ng?<\/td>\n\u2610<\/td>\n<\/td>\n<\/tr>\n
                          S\u01a1 \u0111\u1ed3 c\u00f3 \u0111\u01b0\u1ee3c chia th\u00e0nh c\u00e1c ph\u1ea7n logic kh\u00f4ng?<\/td>\n\u2610<\/td>\n<\/td>\n<\/tr>\n
                          C\u00e1c gi\u1ea3 \u0111\u1ecbnh c\u00f3 \u0111\u01b0\u1ee3c ghi ch\u00e9p l\u1ea1i kh\u00f4ng?<\/td>\n\u2610<\/td>\n<\/td>\n<\/tr>\n<\/table>\n

                          Suy ngh\u0129 cu\u1ed1i c\u00f9ng v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng t\u00e0i li\u1ec7u \ud83c\udfaf<\/h2>\n

                          Duy tr\u00ec c\u00e1c t\u00e0i li\u1ec7u m\u00f4 t\u1ea3 th\u1eddi gian ch\u1ea5t l\u01b0\u1ee3ng cao \u0111\u00f2i h\u1ecfi s\u1ef1 k\u1ef7 lu\u1eadt v\u00e0 \u00e1p d\u1ee5ng nh\u1ea5t qu\u00e1n c\u00e1c th\u1ef1c h\u00e0nh n\u00e0y. M\u1ee5c ti\u00eau kh\u00f4ng ch\u1ec9 l\u00e0 v\u1ebd m\u1ed9t b\u1ee9c tranh, m\u00e0 c\u00f2n l\u00e0 t\u1ea1o ra m\u1ed9t h\u1ee3p \u0111\u1ed3ng \u0111\u00e1ng tin c\u1eady v\u1ec1 h\u00e0nh vi h\u1ec7 th\u1ed1ng. Khi c\u00e1c k\u1ef9 s\u01b0 tu\u00e2n theo c\u00e1c h\u01b0\u1edbng d\u1eabn n\u00e0y, r\u1ee7i ro sai s\u00f3t v\u1ec1 th\u1eddi gian s\u1ebd gi\u1ea3m \u0111\u00e1ng k\u1ec3. T\u00e0i li\u1ec7u r\u00f5 r\u00e0ng gi\u00fap ti\u1ebft ki\u1ec7m th\u1eddi gian khi g\u1ee1 l\u1ed7i v\u00e0 gi\u1ea3m kh\u1ea3 n\u0103ng x\u1ea3y ra l\u1ed7i t\u00edch h\u1ee3p.<\/p>\n

                          T\u1eadp trung v\u00e0o s\u1ef1 r\u00f5 r\u00e0ng, nh\u1ea5t qu\u00e1n v\u00e0 b\u1ed1i c\u1ea3nh. L\u00e0m nh\u01b0 v\u1eady, b\u1ea1n \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c t\u00e0i li\u1ec7u m\u00f4 t\u1ea3 th\u1eddi gian tr\u1edf th\u00e0nh t\u00e0i s\u1ea3n b\u1ec1n v\u1eefng cho \u0111\u1ed9i ng\u0169 ph\u00e1t tri\u1ec3n. C\u1eadp nh\u1eadt th\u01b0\u1eddng xuy\u00ean v\u00e0 tu\u00e2n th\u1ee7 c\u00e1c quy t\u1eafc \u0111\u1eb7t t\u00ean s\u1ebd gi\u00fap c\u00e1c s\u01a1 \u0111\u1ed3 lu\u00f4n h\u1eefu \u00edch trong su\u1ed1t v\u00f2ng \u0111\u1eddi d\u1ef1 \u00e1n. H\u00e3y nh\u1edb r\u1eb1ng, m\u1ed9t s\u01a1 \u0111\u1ed3 d\u1ec5 \u0111\u1ecdc l\u00e0 s\u01a1 \u0111\u1ed3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u00fang c\u00e1ch.<\/p>\n","protected":false},"excerpt":{"rendered":"

                          Trong thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p, vi\u1ec7c hi\u1ec3u r\u00f5 h\u00e0nh vi theo th\u1eddi gian c\u1ee7a c\u00e1c th\u00e0nh ph\u1ea7n l\u00e0 quan tr\u1ecdng kh\u00f4ng k\u00e9m g\u00ec vi\u1ec7c hi\u1ec3u c\u00e1c k\u1ebft n\u1ed1i…<\/p>\n","protected":false},"author":1,"featured_media":571,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"C\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t cho s\u01a1 \u0111\u1ed3 th\u1eddi gian UML: T\u00e0i li\u1ec7u r\u00f5 r\u00e0ng v\u00e0 d\u1ec5 b\u1ea3o tr\u00ec \ud83d\udcd0","_yoast_wpseo_metadesc":"H\u1ecdc c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t v\u1ec1 s\u01a1 \u0111\u1ed3 th\u1eddi gian UML \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e1c \u0111\u1eb7c t\u1ea3 th\u1eddi gian \u0111\u01b0\u1ee3c r\u00f5 r\u00e0ng v\u00e0 d\u1ec5 b\u1ea3o tr\u00ec. 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